有趣的数学【16】:科班出身和草台班子

in #steempress6 years ago

世上的人有很多种,而有些问题答案只有一个。

不同的人,解出同一道题,但是他们所用的方法,可能截然不同。所以,往往只看结果的话,是看不出人和人之间的差别的。

有些人投机取巧,有些人稳扎稳打,可能短时间内取得的结果是一样的,但是,长远来看,稳扎稳打一定比投机取巧走得长远,这就是草台班子和科班出身的区别。

以这道题为例:
image
这道题看似很简单,因为除数和余数都很小,除以3余2,除以4余1的数,心算一下就能得出这个数是:
5

这就是简单的代入法,即可得到一个满足条件的数。而5/12余数是5,所以这道题的正确答案就是
5

但是,5只是满足条件的这个数里面的一个,还有很多个数都满足这个条件。而要得出所有满足条件数的通式,那就需要科班出身的来计算了,绝不是心算一下就可以投机取巧的。

正式的计算结果请看下面的步骤,写的非常清楚,我就不一一解释了。
image

如果有疑问,可以在回复中提出。


这就是草台班子和科班出身的区别。

他们从外表(单一的答案)上来看是一样的,但是,其中运用的原理,解题的方法却大相径庭,不可同日而语的。


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